How a Coffee Espresso Machine Works Understanding how complex devices function can make them easier to understand and appreciate. You can also decide which device is best for you. Water temperature and pressure are two of the most important factors in espresso machines. Water should be between 195 and 204 https://coffeee88482.getblogs.net/62285252/coffee-espresso-machine-the-secret-life-of-coffee-espresso-machine